CN108392952B - Plasma organic waste gas purifying system - Google Patents

Plasma organic waste gas purifying system Download PDF

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Publication number
CN108392952B
CN108392952B CN201810326086.5A CN201810326086A CN108392952B CN 108392952 B CN108392952 B CN 108392952B CN 201810326086 A CN201810326086 A CN 201810326086A CN 108392952 B CN108392952 B CN 108392952B
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plasma
waste gas
organic waste
metal strip
wall
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CN108392952A (en
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竺新波
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Ningbo University
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Ningbo University
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
    • B01D53/323—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00 by electrostatic effects or by high-voltage electric fields
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/62—Carbon oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/79—Injecting reactants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/10—Oxidants
    • B01D2251/106—Peroxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/50—Carbon oxides
    • B01D2257/504—Carbon dioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0258—Other waste gases from painting equipments or paint drying installations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
    • B01D2259/818—Employing electrical discharges or the generation of a plasma
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Treating Waste Gases (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

The invention discloses a plasma organic waste gas purifying system, which mainly relates to the field of waste gas treatment and comprises a condenser, a plasma purifying device and a chimney which are sequentially communicated, wherein a plurality of metal strips communicated with a power supply negative electrode are arranged at the center of the top of the plasma purifying device, the metal strips are uniformly distributed in a circular shape, and the inner wall of the plasma purifying device is communicated with a power supply positive electrode. By adopting the technical scheme, the condenser can condense part of organic gas in the waste gas, so that the working load of the plasma purifying device is reduced. And when the metal strip and the inner wall of the plasma purification device are electrified, an electric field is generated between the metal strip and the inner wall of the plasma purification device, and the electric field can convert nearby organic gas molecules into non-toxic and harmless gases such as carbon dioxide, water vapor and the like. Thereby purifying the organic waste gas rapidly and effectively.

Description

Plasma organic waste gas purifying system
Technical Field
The invention relates to the field of waste gas treatment, in particular to a plasma organic waste gas purification system.
Background
Paint spraying is a method for surface treatment of products which is commonly involved in the production of various products by manufacturing enterprises today. Moreover, after the paint is sprayed, in order to improve the production efficiency of the product, enterprises often accelerate the curing rate of the paint on the surface of the product through heating and drying of a drying oven.
Although the curing rate of the paint is improved in the process, volatile organic substances such as toluene, dimethylbenzene, non-methane total hydrocarbon, odor concentration and the like in the paint are absorbed in the drying box and discharged into the atmosphere, and thus the organic waste gas content in the operation workshop is often out of standard, and the health of workers is dangerous.
The traditional treatment mode of the organic waste gas mainly uses active carbon, and the organic waste gas is adsorbed by utilizing the gaps existing in the active carbon. However, the dryness of activated carbon is required to be high, and the adsorption capacity of activated carbon is directly affected once the activated carbon absorbs a large amount of moisture. Also, the frequency of replacement of activated carbon is relatively high.
Therefore, it is necessary to develop an exhaust gas purification system having high efficiency in treating organic exhaust gas and little secondary pollution.
Disclosure of Invention
The invention aims to provide a plasma organic waste gas purifying system which is beneficial to improving the treatment efficiency of organic waste gas and is not easy to cause secondary pollution.
The above object of the present invention is achieved by the following technical solutions: the utility model provides a plasma organic waste gas clean system, includes condenser, plasma purifier and the chimney of intercommunication in proper order, plasma purifier's top center department is equipped with a plurality of metal strips that switch on mutually with the power negative pole, and the metal strip becomes circular evenly distributed, plasma purifier's inner wall is switched on mutually with the power positive pole.
By adopting the technical scheme, the condenser can be used for condensing part of components in the organic gas, so that the load of the plasma purifying device is reduced. Secondly, when the metal strip and the inner wall of the plasma purification device are electrified, an electric field is generated between the metal strip and the inner wall of the plasma purification device, so that the metal strip and the inner wall of the plasma purification device can ionize water vapor and oxygen in the waste gas into active particles such as OH, HO2, O3 and the like. These active particles attack other nearby organic gas molecules, thereby being capable of converting the nearby organic gas molecules into non-toxic and harmless gases such as carbon dioxide and water vapor. In addition, part of the greasy dirt gas which is not oxidized and decomposed in the waste gas can be adsorbed on the surface of the metal strip under the action of static electricity, and flows to the bottom of the plasma purifying device along the metal strip. Therefore, the cleaning of the greasy dirt by the staff is facilitated.
Preferably, the top of the plasma purifying device is provided with a rotating shaft, and the metal strip is fixed at the end of the rotating shaft.
Through adopting above-mentioned technical scheme, the metal strip can rotate under the drive of rotation axis like this to on the one hand the metal strip can cut the waste gas in the plasma purification device, makes waste gas can mix fully in the plasma purification device, is favorable to guaranteeing the waste gas by the degree of complete processing. On the other hand, when the metal strip rotates, the electric field formed between the metal strip and the inner wall of the plasma purifying device is distributed in an arc shape, so that the coverage area and the density of the electric field are increased, and the efficiency of purifying waste gas is improved.
Preferably, the metal strip is hinged to the rotation shaft along a radial direction of the rotation shaft.
By adopting the technical scheme, when the metal strip rotates along with the rotating shaft, the metal strip is hinged with the rotating shaft, so that the state of the metal strip can be changed along with the change of the centrifugal force, and the cross-sectional area of the swaying ground of the metal strip is changed. Furthermore, the rotation rate of the metal strip can be adjusted at any time according to the waste gas treatment amount, so that the treatment efficiency of the plasma purifying device is effectively improved under the energy-saving state.
Preferably, the metal strip is arranged in a fold line, and a plurality of barbs arranged towards the inner wall of the plasma purifying device are distributed on the surface of the metal strip.
By adopting the technical scheme, as the metal strip is folded, the metal strip is arranged at the bent part in a tip mode, and the end part of the barbed needle is also in a tip mode. Therefore, according to the principle of point discharge, huge electric fields are generated at the bending part of the metal strip and the end part of the barbed needle, so that waste gas at the parts is easily ionized, and the waste gas treatment efficiency is improved.
Preferably, the bottom side of the plasma purification device is communicated with the condenser, the top of the plasma purification device is communicated with the chimney, the top of the plasma purification device is provided with a plurality of spraying holes, and alkaline hydrogen peroxide solution can be sprayed out of the spraying holes.
By adopting the technical scheme, firstly, hydrogen peroxide is relatively stable in an alkaline environment, so that the hydrogen peroxide is favorable for storage. Second, after the organic gas in the exhaust gas is ionized and purified, it is converted into carbon dioxide and water. And the carbon dioxide can react with hydroxyl ions in the alkaline hydrogen peroxide to generate and be absorbed, so that the emission of the carbon dioxide can be reduced. Meanwhile, after hydroxide ions in the alkaline hydrogen peroxide solution are gradually consumed, the Ph value of the alkaline hydrogen peroxide gradually tends to be neutral. At this time, hydrogen peroxide becomes more and more unstable, and oxygen and water are generated. The generated oxygen can be used for oxidizing the organic gas in the waste gas, so that the efficiency of purifying the organic gas is greatly improved.
Preferably, the plasma purifying device is provided with a ceramic sleeve between all the metal strips and the inner wall of the plasma purifying device, and the bottom of the ceramic sleeve is communicated with the air inlet of the plasma purifying device.
Through adopting above-mentioned technical scheme, because alkaline hydrogen peroxide solution is when being sprayed out, it can strike on the metal strip to leave down along the metal strip, and this in-process alkaline hydrogen peroxide solution splashes easily on plasma purifier's the inner wall to on the one hand easily causes the corruption to plasma purifier's inner wall, on the other hand also easily takes place the danger of short circuit. Therefore, the setting of the ceramic sleeve can ensure that the electric field in the plasma purifying device is normally generated, and can prevent alkaline hydrogen peroxide from splashing on the inner wall of the plasma purifying device, thereby improving the safety.
Preferably, an activated carbon adsorption device is further arranged between the plasma purification device and the chimney, a plurality of baffles are arranged at the air inlet of the activated carbon adsorption device, and the baffles are inclined towards the bottom of the activated carbon adsorption device.
Through adopting above-mentioned technical scheme, active carbon adsorption equipment can carry out further adsorption treatment to the waste gas after plasma purifier to further reduce the emission of organic gas. Moreover, set up the baffle at the air intake, and the baffle is slope setting down, and the water smoke that originally carried out by waste gas will gather the drop of water on the baffle like this to flow to active carbon adsorption device's bottom along the baffle, thereby become moist and influence adsorption performance after being favorable to avoiding active carbon to adsorb water smoke.
Preferably, the baffle is arranged obliquely downwards in an arc shape.
Through adopting above-mentioned technical scheme, waste gas can flow along the baffle more smoothly like this to both be favorable to improving the efficiency that water smoke formed the water droplet at the baffle surface, be difficult to cause the loss of the mechanical energy of waste gas flow in-process again, thereby be favorable to guaranteeing the treatment effeciency of waste gas.
Preferably, a plurality of active carbon plates which are parallel to each other in an inclined manner are arranged above the air inlet of the active carbon adsorption device, and the active carbon plates are arranged on the two corresponding inner walls of the active carbon adsorption device in a crossed manner.
By adopting the technical scheme, the active carbon plates are inclined and parallel, so that the flow path of the waste gas can be prolonged on the one hand, and the adsorption effect of the active carbon adsorption device on the waste gas can be improved. On the other hand, when suspended particles in the exhaust gas settle on the activated carbon plate, the suspended particles can fall down along the activated carbon plate, so that the purification efficiency of the exhaust gas is further improved.
Preferably, a condensing channel for passing the organic gas is arranged in the condenser, and the condensing channel (11) has a plurality of sections which are outwardly convex.
By adopting the technical scheme, when the organic waste gas flows in the condensation channel, the flow speed is stumbling, so that the waste gas is helped to be continuously mixed in the condensation channel, and the organic waste gas can be effectively cooled sufficiently. Meanwhile, when the organic waste gas flows from the small opening to the large caliber, a local retention belt can appear, and the organic waste gas in the space is easily condensed and adhered to the condensation channel and flows down along the condensation channel, so that the purification efficiency of the organic waste gas is improved.
In summary, the invention has the following beneficial effects:
1. activating oxygen and water vapor by using an electric field to convert the oxygen and the water vapor into active particles capable of oxidizing organic gases, thereby removing the organic gases in the exhaust gas;
2. the metal strip is hinged with the rotating shaft, so that when the rotating speed of the rotating shaft is increased, the metal strip gradually tends to be in a horizontal state, the sweeping area of the metal strip is increased, the uniformity of waste gas in the plasma purifying device is facilitated, and the purifying efficiency of the waste gas is improved;
3. the alkaline hydrogen peroxide solution absorbs the treated exhaust gas, so that not only can the carbon dioxide in the exhaust gas be effectively removed, but also sufficient oxygen can be provided for the subsequent oxidation.
Drawings
Fig. 1 is a schematic structural view of a plasma organic exhaust gas purification system according to the first embodiment;
fig. 2 is a schematic structural view of a plasma purifying apparatus according to the first embodiment;
fig. 3 is a schematic structural view of a condenser according to the first embodiment;
fig. 4 is a schematic structural view of a plasma purifying apparatus according to a second embodiment;
fig. 5 is a schematic structural view of a plasma organic exhaust gas purification system according to a third embodiment;
fig. 6 is a schematic structural view of an activated carbon adsorption apparatus of the third embodiment.
In the figure, 1, a condenser; 11. a condensing channel; 12. a clean water tank; 13. a cooling chamber; 14. a waste liquid collection tank; 2. a plasma purifying device; 21. a rotation shaft; 22. a metal strip; 221. barbed needles; 23. spraying holes; 24. a liquid storage tank; 25. a ceramic sleeve; 3. a chimney; 31. an exhaust fan; 4. an activated carbon adsorption device; 41. a baffle; 42. an activated carbon plate; 5. an exhaust gas absorbing cover.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Embodiment one:
as shown in fig. 1, a plasma organic waste gas purifying system includes a condenser 1, a plasma purifying device 2, and a chimney 3. Here, the bottom of the condenser 1 is communicated with an exhaust gas absorbing hood 5, the exhaust gas absorbing hood 5 mainly collects organic exhaust gas exhausted from a drying oven or the like, while the top of the condenser 1 is communicated with a side surface of the plasma purifying device 2 near the bottom, and furthermore, the top of the plasma purifying device 2 is communicated with an exhaust fan 31 of the chimney 3.
As shown in fig. 2, a rotating shaft 21 is arranged at the center of the top of the plasma purifying device 2 in a penetrating way, and the upper end of the rotating shaft 21 is connected with a motor outside the plasma purifying device 2. The rotation shaft 21 can be rotated by a motor. Meanwhile, the lower end of the rotating shaft 21 is hinged with a plurality of metal strips 22 along the radial direction of the rotating shaft 21, and the metal strips 22 can turn upwards in a horizontal state by taking the hinged position as the axis. And all the metal strips 22 are symmetrically arranged about the center of the rotation shaft 21, the number of specific metal strips 22 can be determined according to practical situations, and the number of the metal strips 22 is six. Further, since the lower half of the rotary shaft 21 is in contact with the metal plate connected to the negative electrode of the power source, the metal strip 22 is connected to the negative electrode of the power source. The side wall of the plasma purifying device 2 is divided into an outer wall and an inner wall, and the outer wall and the inner wall are isolated by insulating materials, such as ceramics, wood and the like. And the inner wall is communicated with the positive electrode of the power supply.
When energized, a strong electric field is formed between the metal strip 22 and the inner wall of the plasma cleaning device 2, which easily ionizes water vapor and oxygen in the exhaust gas into active particles such as OH, HO2, O3, etc. These active particles attack other nearby organic exhaust gas molecules, thereby being capable of converting the nearby organic exhaust gas molecules into non-toxic and harmless gases such as carbon dioxide and water vapor. In addition, the metal strip 22 gradually tends to be in a horizontal state with an increase in the rotation speed of the rotary shaft 21, so that the sweeping area thereof increases, and the exhaust gas in the plasma purifying device 2 can be stirred, thereby improving the efficiency of exhaust gas purification. Moreover, the electric field lines in the whole plasma purifying device 2 tend to be curved when the metal strip 22 rotates, so that the cutting action on the exhaust gas is easily formed, and the ionization efficiency of the exhaust gas is improved.
In addition, in order to enable the waste gas to be ionized more easily, the metal strip 22 is arranged in a fold line shape, and a plurality of barbs 221 are distributed on the surface of the metal strip 22, so that the local electric field intensity is relatively large according to the principle of tip discharge because the ends of the fold line shape and the ends of the barbs 221 are relatively sharp, the waste gas is ionized more easily, and the waste gas purifying efficiency is improved.
Furthermore, as shown in fig. 3, the condenser 1 is provided with a vertically arranged condensation channel 11, the lower end of the condensation channel 11 is communicated with the waste gas absorbing cover 5, the upper end of the condensation channel 11 is communicated with the plasma purifying device 2, and the condensation channel 11 is externally spherically convex from top to bottom in a plurality of sections. And a cooling cavity 13 is formed between the condensation channel 11 and the inner wall of the cooler 1, the cooling cavity 13 is communicated with an external clear water tank 12 through a water pump, and clear water is pumped into the cooling cavity 13 by the water pump to cool organic waste gas in the condensation channel 11. The cooling cavity 13 is also provided with another outlet which is communicated with the clean water tank 12, so that the recycling of clean water can be realized, and the waste gas can be primarily purified, thereby being beneficial to reducing the work load of the plasma purifying device 2.
And, the lower end of the condensation channel 11 is also provided with a waste liquid collecting tank 14, so that the condensed organic waste liquid can be collected into the waste liquid collecting tank 14, thereby further treating the organic waste liquid.
Embodiment two:
as shown in fig. 4, in a plasma organic waste gas purifying system, based on the first embodiment, the top of the plasma purifying device 2 is further provided with a plurality of spraying holes 23, and the spraying holes 23 are communicated with an external liquid storage tank 24, and the solution in the liquid storage tank 24 is an alkaline hydrogen peroxide solution, so that the preservation effect of hydrogen peroxide is improved, and the decomposition rate of hydrogen peroxide is reduced. When the alkaline hydrogen peroxide solution is sprayed, the metal strips 22 splash the alkaline hydrogen peroxide in the rotating process, so that the purification of the waste gas can be quickened.
In addition, after the waste gas enters the plasma purification device 2, the waste gas is oxidized and decomposed to generate carbon dioxide and water, and the carbon dioxide and water are absorbed by the alkaline hydrogen peroxide, so that the pH value of the alkaline hydrogen peroxide tends to be neutral, the self-decomposition efficiency of the hydrogen peroxide is accelerated, oxygen is generated, and sufficient raw materials are provided for the generation of active particles such as OH, HO2, O3 and the like, thereby being beneficial to improving the treatment efficiency of the waste gas and reducing the emission of carbon dioxide. Here, the alkali used for preparing alkaline hydrogen peroxide with hydrogen peroxide is calcium hydroxide, and the alkali can react with carbon dioxide in waste gas to generate calcium carbonate precipitate, so that the removal efficiency of carbon dioxide is improved, and meanwhile, the produced precipitate can be used as a building material, and further, certain economic efficiency is provided for waste gas treatment.
Furthermore, the plasma purifying device 2 is provided with a ceramic sleeve 25 outside all the metal strips 22 and the spraying holes 23, and the top of the ceramic sleeve 25 is connected with the top of the plasma purifying device 2 in a sealing way. The lower edge of the ceramic sleeve 25 is sealed with the inner wall of the plasma purifying device 2, and the lower end of the ceramic sleeve 25 is lower than the lower end of the metal strip 22. So that the exhaust gas flows through the ceramic sleeve 25 and exits the plasma cleaning device 2. Therefore, under the condition of ensuring normal formation of an electric field, the problem of short circuit of the plasma purifying device 2 caused by too dense splashing of alkaline hydrogen peroxide can be avoided.
Embodiment III:
as shown in fig. 5, an active carbon adsorption device 4 is further disposed between the plasma purification device 2 and the chimney 3 on the basis of the first embodiment, wherein, as shown in fig. 6, the air inlet of the active carbon adsorption device 4 is provided with a plurality of baffles 41 which are inclined downwards, and the baffles 41 are arc-shaped. Thus, the exhaust gas passing through the plasma purifying device 2 will first pass through the baffle plate 41, and the water mist in the exhaust gas will condense on the baffle plate 41 and flow down along the baffle plate 41, thereby effectively prolonging the service life of the baffle plate 41. Thereby reducing the water content in the waste gas, being beneficial to ensuring that the activated carbon is in a dry state for a long time, and further being beneficial to ensuring the adsorption performance of the activated carbon for a long time.
Moreover, the activated carbon adsorption device 4 is further provided with a plurality of activated carbon plates 42 above the air inlet, and the activated carbon plates 42 are arranged on two corresponding surfaces of the activated carbon adsorption device 4 in parallel and obliquely crossed, so that on one hand, the flow path of waste gas can be prolonged, and on the other hand, small particles in the waste gas can fall down along the activated carbon plates 42 after being deposited on the activated carbon plates 42, and the probability that the small particles block the adsorption holes of the activated carbon plates 42 is reduced. Ensuring that the activated carbon sheet 42 has good adsorption for a long period of time.
The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and modifications to the present embodiment, which may not creatively contribute to the present invention as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present invention.

Claims (8)

1. A plasma organic waste gas purification system, characterized in that: including condenser (1), plasma purifier (2) and chimney (3) that communicate in proper order, the top center department of plasma purifier (2) is equipped with a plurality of metal strips (22) that are linked together with the power negative pole, and metal strip (22) become circular evenly distributed, the inner wall of plasma purifier (2) is linked together with the power positive pole, the top of plasma purifier (2) has rotation axis (21), just metal strip (22) are fixed in the tip of rotation axis (21), metal strip (22) are articulated with rotation axis (21) along the radial of rotation axis (21).
2. A plasma organic waste gas purification system as claimed in claim 1, wherein: the metal strip (22) is arranged in a fold line, and a plurality of barbs (221) which are arranged towards the inner wall of the plasma purifying device (2) are distributed on the surface of the metal strip (22).
3. A plasma organic waste gas purification system as claimed in claim 1, wherein: the bottom side of plasma purifier (2) is linked together with condenser (1), the top of plasma purifier (2) is linked together with chimney (3), just the top of plasma purifier (2) has a plurality of holes (23) that spray, can spray out alkaline hydrogen peroxide solution in hole (23).
4. A plasma organic waste gas purification system as claimed in claim 3, wherein: the plasma purification device (2) is characterized in that a ceramic sleeve (25) is arranged between all metal strips (22) and the inner wall of the plasma purification device (2), and the bottom of the ceramic sleeve (25) is communicated with an air inlet of the plasma purification device (2).
5. A plasma organic waste gas purification system as claimed in claim 1, wherein: an activated carbon adsorption device (4) is further arranged between the plasma purification device (2) and the chimney (3), a plurality of baffles (41) are arranged at the air inlet of the activated carbon adsorption device (4), and the baffles (41) are obliquely arranged towards the bottom of the activated carbon adsorption device (4).
6. The plasma organic waste gas purifying system according to claim 5, wherein: the baffle (41) is arranged obliquely downwards in an arc shape.
7. The plasma organic waste gas purifying system according to claim 5, wherein: a plurality of active carbon plates (42) which are inclined and parallel are arranged above the air inlet of the active carbon adsorption device (4), and the active carbon plates (42) are arranged on two corresponding inner walls of the active carbon adsorption device (4) in a crossing way.
8. A plasma organic waste gas purification system as claimed in claim 1, wherein: the condenser (1) is internally provided with a condensing channel (11) for the passage of organic gas, and the condensing channel (11) is provided with a plurality of sections which are convex outwards in a sphere.
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